Microchip Technology EVB-LAN9360 AVB Audio Endpoint Evaluation Board

Microchip Technology EVB-LAN9360 AVB Audio Endpoint Evaluation Board (EV36K06A) is a reference design for digital audio transmission over Ethernet AVB based on the LAN9360 AVB Audio Endpoint Controller. The LAN9360  interconnects vehicle infotainment devices, including speakers, amplifiers, microphones, navigation systems, radio tuners, and smart headrests with Ethernet AVB. The LAN9360 bridges audio between Ethernet AVB and Inter-IC Sound (I2S™), Time Division Multiplexing (TDM), and Pulse Density Modulation (PDM) local audio interfaces. The LAN9360 completely supports audio transmission over Ethernet AVB, including generalized Precision Time Protocol (gPTP), timestamping, transport protocols, and content protection with High-bandwidth Digital Content Protection (HDCP). The device also supports secure boot and secure remote updates over Ethernet. 

The Microchip Technology EVB-LAN9360 AVB Audio Endpoint Evaluation Board can be used to simulate an AVB Ethernet Endpoint that can be operated as a “Listener” or as a “Talker”. The Evaluation Board provides a variety of functionalities that allow the user to prototype different types of Ethernet devices, such as a remote amplifier, microphone, or microphone array.

The EVB-LAN9360 Evaluation Board includes a PDM MEMS microphone and an audio codec. The Evaluation Board can be used stand-alone to directly test or implement several configuration options. The EVB-LAN9360 can also be easily extended using the onboard expansion connectors that allow external devices to be connected.

The EVB-LAN9360 Evaluation Board does not include an Ethernet transceiver (PHY). An Ethernet PHY Module, such as the 100BASE-T1 EVB-LAN8770-RMII (EV48S68A) or 100BASE-TX KSZ8041 PHY Daughter Board (AC320004-5), must be purchased separately.

Features

  • LAN9360 AVB Audio Endpoint Controller
  • Supports the following standards (and protocols)
    • IEEE Std 802.1 AS™-2011 generalized Precision Time Protocol (gPTP) slave: time synchronization over the network
    • IEEE Std 1722™-2016 (AVTP): Talker and Listener
    • IEEE Std 1733™-2011 (AVB RTP Extension): Talker and Listener
  • Microphone
    • One onboard PDM microphone (Micro-Electro-Mechanical Systems (MEMS) technology)
    • Support for external analog microphone
  • Audio codec 
    • One analog stereo input
    • One analog stereo output

Required Equipment

  • Ethernet PHY Module
    • 100BASE-T1 EVB-LAN8770-RMII (EV48S68A)
    • 100BASE-TX KSZ8041 PHY Daughter Board (AC320004-5)
  • Programming Tools
    • J-32 Debug Probe Debugger/Programmer (DV164232)
    • ICD4 RJ45 Debugger Adapter Board (AC102015)

Block Diagram

Block Diagram - Microchip Technology EVB-LAN9360 AVB Audio Endpoint Evaluation Board

Microchip Technology EVB-LAN9360 AVB Audio Endpoint Evaluation Board